4.8 Article

Spin-Dependent Photovoltaic and Photogalvanic Responses of Optoelectronic Devices Based on Chiral Two-Dimensional Hybrid Organic-Inorganic Perovskites

期刊

ACS NANO
卷 15, 期 1, 页码 588-595

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acsnano.0c05980

关键词

hybrid organic-inorganic perovskites; chirality; spin transport; photovoltaic effect; circular photogalvanic effect

资金

  1. Center for Hybrid Organic Inorganic Semiconductors for Energy (CHOISE), an Energy Frontier Research Center - Office of Basic Energy Sciences, Office of Science, within the U.S
  2. Department of Energy Office of Science [DE-SC0014579]

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Research has shown that integrating chiral organic ligands into two-dimensional hybrid organic-inorganic perovskites can introduce spintronics applications, leading to spin-dependent photovoltaic and photogalvanic responses. This discovery may have potential applications in optoelectronic devices sensitive to light helicity.
Two-dimensional hybrid organic-inorganic perovskites (2D-HOIPs) that form natural multiple quantum wells have attracted increased research interest due to their interesting physics and potential applications in optoelectronic devices. Recent studies have shown that spintronics applications can also be introduced to 2D-HOIPs upon integrating chiral organic ligands into the organic layers. Here we report spin-dependent photovoltaic and photogalvanic responses of optoelectronic devices based on chiral 2D-HOIPs, namely, (R-MBA)(2)PbI4 and (S-MBA)(2)PbI4. The out-of-plane photocurrent response in vertical photovoltaic devices exhibits similar to 10% difference upon right and left circularly polarized light (CPL) excitation, which originates from selective spin transport through the chiral multilayers. In contrast, the in-plane photocurrent response generated by CPL excitation of planar photoconductive devices shows a typical response of chirality-induced circular photogalvanic effect that originates from the Rashba splitting in the electronic bands of these compounds. Our studies may lead to potential applications of chiral 2D-HOIPs in optoelectronic devices that are sensitive to the light helicity.

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